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Most aftermarket air cleaners have a knockout provision on the base to have a breather hose hook up.

Acetone will remove gas varnish and is a fairly safe solvent to people and aluminum.

It's true, muriatic acid is used to adjust swimming pool water's pH. I might put in a quart in a 12,000 gallon pool to lower the pH to where it needs to be. It is severely diluted and I suspect one could dilute HCl acid enough to be safe for dipping a carb because I could throw it in my pool and...

I put muriatic acid in my swimming pool and then swim in it!!!

If the power valve diaphragm fails or leaks, it will allow fuel to enter the intake manifold through the carburetor base plate. This can cause a very rich condition at idle and low speed

My bet is a faulty needle and seat that is causing very high gas levels in the float bowl or bowls.

Stuck float needle valve, junk between needle and seat.

If you are using the Hyperspark dist. and matching coil, you can use the old coil wires (brown and blue) tied together to provide power to the Sniper ignition module since the module powers the coil. You also don't need the ballast resistor. I modified my ballast resistor by soldering a good...

When you say ready to run dist, do you mean the hyperspark distributor?

Is the Sniper computer getting 12 volts in the start and run position?

This is how I mounted my fuel pump on my 71 Barracuda. I need to bend the plate back towards the fuel tank a 1/4 inch because the fuel pump straps just barely contact the rear end. Rod IMG_4783.JPG

One advantage of TBI it maintains an old school look. With a standard air cleaner, looks like a carb.

My 440 would pop every time my spark plug boot got burned thru by the headers.

I would say the six pack is a two barrel with four secondaries.

The outboard carbs do have air fuel mixture screws that are preset and hidden behind lead plugs at the base of the throttle plates.

Takes a couple of strong thumbs, use your thumbs to support the bend and do a small adjustment, slide down an inch or so and do another tweak. Take your time and it won't kink

I don't see why not. I would find a junker throttle plate and try brazing it for practice though.

I wish I could figure out what you are asking...

I have a Sniper on a LD340 on my 408. The cam is pretty mellow, so tell you the truth, I have never checked how much vacuum my engine pulls. Works well.

Good picture, as the pic shows, the jets only limit (unless severely undersized) fuel flow at wide open throttle. As air flows thru the venturi of the carb (narrowing of the opening), it creates a low pressure which allows the higher atmospheric pressure in the float bowl to squirt fuel into the...

Mopar designed the outboard carbs a small potion of the idle circuitry to allow some fuel usage from the outboard carbs so that the gas in the float bowls would be used and not stagnate in case you never opened them up, like that ever happened. Anyhow, they were preset and leaded over from the...

Do you have 12 volts in start as well?

sweet! return line still required?

71 Barracuda install.

I would go with a 3/8 oem material. I got mine from inline tube and they were very nice and not that expensive. At first I tried to replicate a 3/8 line from my existing 5/16 and I failed pretty miserably. I normally can do most things, but the fuel lines have funky bends. I really wonder how...

It looks like there are a dozen ways to skin the cat, each have their advantages and disadvantages.

I used this stuff on my Holley Sniper install.... OE Zinc Automotive Steel Brake Fuel Transmission Line Tubing 3/8" OD Coil Roll | eBay

Check basics such as float levels and no vacuum leaks. Do you see dribbling down the throat of any carb when running? Also, make sure your ignition system is perfect. Many times carb problems are really an ignition problem.

Interesting read here; Zero To Hero! This Guy Reveals Dual-Quad Tuning Secrets! - Hot Rod Network

I misread what you were asking.